Exchange 2003: Can I send a mail to ALL USERS with a mailbox

Ok, what I had to do was show the public folder containing the distribution group as an email address book. This was accomplished by right-clicking the public folder, choosing properties, selecting the Outlook Address Book tab, and then realizing that the "Show this folder as an e-mail Address Book" checkbox was greyed out.

In order to activate this option, I had to add an Outlook Address Book to my profile. Why and what is this? I dunno. From main Outlook, choose Tools -> Email Accounts, select "Add a new directory or address book" and click next, select Additional Address Books and click next, choose Outlook Address Book and click next, and then finish. After doing this, it's possible to to "Show this folder as an e-mail address book" for a public folder containing contacts.

After all that, sending a message to the distribution group worked fine.

Pretty intuitive.

In Microsoft Exchange 2000 Server and Microsoft Exchange Server 2003, you can send a copy of all non-delivery reports (NDRs) to a specific mailbox or [SMTP] e-mail address.

-- XADM: How to Send a Copy of an NDR to a Specific E-mail Address